{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Local anesthetics that are commonly used in ophthalmic surgery ( 0 . 75 % bupivacaine hydrochloride , 2 . 0 % mepivacaine hydrochloride , and 2 . 0 % lidocaine hydrochloride plus 1 : 100 , 000 epinephrine ) were injected into the retrobulbar area of rat eyes ."}
{"Chemical": ["bupivacaine hydrochloride", "mepivacaine hydrochloride", "lidocaine hydrochloride", "epinephrine"]}